Dude just do some research plz, don't derail the simple function of this thread.
I personally can't recall the full extent of all the roles he's held over the years.
But there's no Qn he is/was one of the more prominent team leaders, & its not just about thanking him.

on-topic:
Thank-you Sotiris & colleagues still with Maemo/MeeGo or departed....
For all your sweat, blood, & tears, in the face ****-house management, really since Maemo's birth.